<cdk-virtual-scroll-viewport itemSize="73" class="infinite-container" (scrollend)="onScrollend()">
  <nz-list [nzHeader]="header">
    <ng-template #header>
      <input (ngModelChange)="realNameChange($event)" [ngModel]="realNameSource | async" nz-input placeholder="输入姓名以查询">
    </ng-template>
    <nz-list-item class="list-item" *ngFor="let user of users" (click)="checkUserDetail(user)">
      <span style="margin-left: 10px" nz-typography>{{ user.realName }} </span>
    </nz-list-item>
  </nz-list>
</cdk-virtual-scroll-viewport>
